#region Copyright (c) 2006-2009 Widgetsphere LLC, All Rights Reserved
//--------------------------------------------------------------------- *
//                          Widgetsphere  LLC                           *
//             Copyright (c) 2006-2009 All Rights reserved              *
//                                                                      *
//                                                                      *
//This file and its contents are protected by United States and         *
//International copyright laws.  Unauthorized reproduction and/or       *
//distribution of all or any portion of the code contained herein       *
//is strictly prohibited and will result in severe civil and criminal   *
//penalties.  Any violations of this copyright will be prosecuted       *
//to the fullest extent possible under law.                             *
//                                                                      *
//THE SOURCE CODE CONTAINED HEREIN AND IN RELATED FILES IS PROVIDED     *
//TO THE REGISTERED DEVELOPER FOR THE PURPOSES OF EDUCATION AND         *
//TROUBLESHOOTING. UNDER NO CIRCUMSTANCES MAY ANY PORTION OF THE SOURCE *
//CODE BE DISTRIBUTED, DISCLOSED OR OTHERWISE MADE AVAILABLE TO ANY     *
//THIRD PARTY WITHOUT THE EXPRESS WRITTEN CONSENT OF WIDGETSPHERE LLC   *
//                                                                      *
//UNDER NO CIRCUMSTANCES MAY THE SOURCE CODE BE USED IN WHOLE OR IN     *
//PART, AS THE BASIS FOR CREATING A PRODUCT THAT PROVIDES THE SAME, OR  *
//SUBSTANTIALLY THE SAME, FUNCTIONALITY AS ANY WIDGETSPHERE PRODUCT.    *
//                                                                      *
//THE REGISTERED DEVELOPER ACKNOWLEDGES THAT THIS SOURCE CODE           *
//CONTAINS VALUABLE AND PROPRIETARY TRADE SECRETS OF WIDGETSPHERE,      *
//INC.  THE REGISTERED DEVELOPER AGREES TO EXPEND EVERY EFFORT TO       *
//INSURE ITS CONFIDENTIALITY.                                           *
//                                                                      *
//THE END USER LICENSE AGREEMENT (EULA) ACCOMPANYING THE PRODUCT        *
//PERMITS THE REGISTERED DEVELOPER TO REDISTRIBUTE THE PRODUCT IN       *
//EXECUTABLE FORM ONLY IN SUPPORT OF APPLICATIONS WRITTEN USING         *
//THE PRODUCT.  IT DOES NOT PROVIDE ANY RIGHTS REGARDING THE            *
//SOURCE CODE CONTAINED HEREIN.                                         *
//                                                                      *
//THIS COPYRIGHT NOTICE MAY NOT BE REMOVED FROM THIS FILE.              *
//--------------------------------------------------------------------- *
#endregion
using System;
using System.ComponentModel;
using System.Xml;
using System.Collections;
using Widgetsphere.Generator.Common.GeneratorFramework;
using Widgetsphere.Generator.Common.Util;
using System.Collections.Generic;
using System.Collections.ObjectModel;

namespace Widgetsphere.Generator.Models
{
	[
	Editor(typeof(Widgetsphere.Generator.Design.Editors.ColumnCollectionEditor), typeof(System.Drawing.Design.UITypeEditor))
	]
	public class ColumnCollection : BaseModelCollection, IEnumerable<Column>
	{
		#region Member Variables

		protected Hashtable internalList;
		protected int lastId = 1;

		#endregion

		#region Constructor

    public ColumnCollection(IModelObject root)
      : base(root)
		{
			internalList = new Hashtable();
		}

		#endregion

		#region Property Implementations

		[Browsable(false)]
		public string CorePropertiesHash
		{
			get
			{
				SortedDictionary<string, Column> sortedList = new SortedDictionary<string,Column>();
				foreach (Column c in this)
				{
					sortedList.Add(c.Name, c);
				}

				string hash = "";
				foreach (string key in sortedList.Keys)
				{
					Column c = sortedList[key];
					hash += c.CorePropertiesHash;
				}
				return hash;
			}
		}

		#endregion

		#region Methods

		public ReadOnlyCollection<Column> GetById(int id)
		{
			List<Column> retval = new List<Column>();
			foreach(Column element in this)
			{
				if (element.Id == id)
					retval.Add(element);
			}
			return retval.AsReadOnly();
		}

		internal int NextIndex()
		{
			lastId++;
			return lastId;
		}

		public int IndexOf(Column column)
		{
			int index=0;
			foreach (Column c in this)
			{
				if (column == c) return index;
				index++;
			}
			return -1;
		}

		#endregion

		#region IXMLable Members

		public override void XmlAppend(XmlNode node)
		{
			XmlDocument oDoc = node.OwnerDocument;

      XmlAttribute keyNode = oDoc.CreateAttribute("key");
      keyNode.Value = this.Key.ToString();
      node.Attributes.Append(keyNode);

      foreach (Column column in internalList.Values)
			{
				XmlNode columnNode = oDoc.CreateElement("column"); 
				column.XmlAppend(columnNode);
				node.AppendChild(columnNode);
			}
	
		}

		public override void XmlLoad(XmlNode node)
		{
      _key = XmlHelper.GetAttributeValue(node, "key", _key);
			XmlNodeList columnNodes = node.SelectNodes("column");
			foreach(XmlNode columnNode in columnNodes)
			{
				Column newColumn = new Column(this.Root);
				newColumn.XmlLoad(columnNode);
				internalList.Add(newColumn.Id, newColumn);
				if (lastId < newColumn.Id) lastId = newColumn.Id;
			}

      this.Dirty = false;

		}

		#endregion

		#region IEnumerable Members

		public override IEnumerator GetEnumerator()
		{
			ArrayList al = new ArrayList();
			foreach (int key in internalList.Keys)
				al.Add(internalList[key]);
			return al.GetEnumerator();
		}

		#endregion

		#region IDictionary Members

		public bool IsReadOnly
		{
			get
			{
				return internalList.IsReadOnly;
			}
		}

		public Column this[int columnId]
		{
			get
			{
				return (Column)internalList[columnId];
			}
			set
			{
				internalList[columnId] = value;
			}
		}

		public Column this[string name]
		{
			get
			{
				foreach (Column c in this)
				{
					if (c.Name.ToLower() == name.ToLower())
						return c;
				}
				return null;				
			}
		}


		public void Remove(int columnId)
		{
			//Delete relationships where this column is a child
			ReadOnlyCollection<Relation> al1 = ((ModelRoot)this.Root).Database.Relations.FindByChildColumn(this.GetById(columnId)[0]);
			foreach (Relation relation in al1)
			{
				((ModelRoot)this.Root).Database.Relations.Remove(relation);
			}

			//Delete relationships where this column is a parent
			ReadOnlyCollection<Relation> al2 = ((ModelRoot)this.Root).Database.Relations.FindByParentColumn(this.GetById(columnId)[0]);
			foreach (Relation relation in al2)
			{
				((ModelRoot)this.Root).Database.Relations.Remove(relation);
			}

      this.Root.Dirty = true;
			internalList.Remove(columnId);
		}

    public void Remove(Column column)
    {
      Remove(column.Id);
    }

		public bool Contains(int columnId)
		{
			return internalList.Contains(columnId);
		}

		public bool Contains(Column column)
		{
			foreach (Column c in this)
			{
				if (c.Id == column.Id)
				{
					return true;
				}
			}
			return false;			
		}

    public override void Clear()
		{
			internalList.Clear();
		}


		internal void Add(Column value)
		{
			try
			{
				internalList.Add(value.Id, value);
			}
			catch (Exception ex)
			{				
				throw;
			}
		}

		public Column Add(string name)
		{
			Column newItem = new Column(this.Root);
			newItem.Name = name;
			lastId++;
			newItem.SetId(lastId);
			this.Add(newItem);
			return newItem;
		}

    public override void AddRange(ICollection list)
    {
      foreach (Column element in list)
      {
        lastId++;
        element.SetId(lastId);
        internalList.Add(lastId, element);
      }
    }

		public void AddRange(IEnumerable<Column> list)
		{
			foreach (Column element in list)
			{
				lastId++;
				element.SetId(lastId);
				internalList.Add(lastId, element);
			}
		}	
    
    public Column Add()
		{
			return this.Add(this.GetUniqueName());
		}

		public bool IsFixedSize
		{
			get
			{
				return internalList.IsFixedSize;
			}
		}

		public bool Contains(string name)
		{
			foreach(Column column in this)
			{
				if (string.Compare(column.Name, name, true) == 0)
				{
					return true;
				}
			}
			return false;
		}

		private string GetUniqueName()
		{
			//const string baseName = "Column";
			//int ii = 1;
			//string newName = baseName + ii.ToString();
			//while (this.Contains(newName))
			//{
			//  ii++;
			//  newName = baseName + ii.ToString();						
			//}
			//return newName;
			return "[NEW COLUMN]";
		}

		#endregion

		#region ICollection Members

    public override bool IsSynchronized
		{
			get
			{
				return internalList.IsSynchronized;
			}
		}

    public override int Count
		{
			get
			{
				return internalList.Count;
			}
		}

    public override void CopyTo(Array array, int index)
		{
			internalList.CopyTo(array, index);
		}

    public override object SyncRoot
		{
			get
			{
				return internalList.SyncRoot;
			}
		}

		#endregion
		
		#region IEnumerable<Column> Members

		IEnumerator<Column> IEnumerable<Column>.GetEnumerator()
		{
			List<Column> retval = new List<Column>();
			foreach (int key in internalList.Keys)
				retval.Add((Column)internalList[key]);
			return retval.GetEnumerator();
		}

		#endregion

		#region IEnumerable Members

		IEnumerator IEnumerable.GetEnumerator()
		{
			List<Column> retval = new List<Column>();
			foreach (int key in internalList.Keys)
				retval.Add((Column)internalList[key]);
			return retval.GetEnumerator();
		}

		#endregion
	}
}
